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来势汹汹的新冠肺炎疫情已经持续了小半年，很多人都在迫切地等待着可以摘掉口罩的那一天。然而，科学家的一项最新研究预测说，如果没有疫苗或特效药，被感染者不能获得永久免疫力，疫情可能会持续多年甚至会成为周期性暴发的流行病。 A woman with a face mask practices social distancing while waiting for food donations outside a food bank, as the spread of the coronavirus disease (COVID-19) continues, in Gypsum, Colorado, US, April 13, 2020. REUTERS/Shannon Stapleton Physical distancing measures may need to be in place intermittently until 2022, scientists have warned in an analysis that suggests there could be resurgences of Covid-19 for years to come. 科学家在一项分析报告中警告称，间歇性的隔离措施可能需要持续到2022年。这项报告指出，未来几年，新冠疫情可能会卷土重来。 The paper, published in the journal Science, concludes that a one-time lockdown will not be sufficient to bring the pandemic under control and that secondary peaks could be larger than the current one without continued restrictions. 这份发表在《科学》期刊上的研究报告得出结论说，一时的封锁将不足以控制全球性流行病，如果没有持续的限制措施，第二次疫情高峰可能会比目前这次更严重。 One scenario predicted a resurgence could occur as far in the future as 2025 in the absence of a vaccine or effective treatment. | 
